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SUMMARY:Challenges and Progress in Organic RFID - Paul Heremans\, IMEC Bel
 gium
DTSTART:20070309T143000Z
DTEND:20070309T153000Z
UID:TALK6231@talks.cam.ac.uk
CONTACT:Chris McNeill
DESCRIPTION:Organic and polymer logic is being pursued for low-cost and la
 rge-area applications. One of these applications may be low-cost\, possibl
 y disposable\, RFID tags.  Such RFID tags can\, at a later stage\, be equi
 pped with sensors\, turning them into “smart labels”. Such tags and la
 bels would transmit information from a memory and/or a sensor to a base st
 ation.    \nAt IMEC\, we presently focus on two aspects of this applicatio
 n.  The first is the realization of circuit blocks that function at a reas
 onably low supply voltage and power.  This will be needed to achieve suffi
 cient reading distance for the tags.  The second aspect concerns the gener
 ation and management of the power supply.  In our approach\, the tags are 
 autonomous and passive\, i.e. they do not include a battery.  In that case
 \, a rectifier is required to produce the supply voltage of the circuit fr
 om the received RF carrier.  We fabricate rectifiers by integrating organi
 c capacitors and vertical organic diodes.  The diodes consist of a stack o
 f Au/pentacene/Al. Recently\, we have shown operation of organic-diode-bas
 ed rectifiers at frequencies up to 50 MHz [1]. In this seminar\, we will s
 how the progress that has recently been achieved with these rectifiers. \n
 [1] S. Steudel et al.\, “50 MHz rectifier based on an organic diode”\,
  Nat. Mater.\, vol. 4\, no. 8\, pp. 597-600 (2005)\n
LOCATION:Small Lecture Theatre\, Cavendish Laboratory\, Department of Phys
 ics
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